:root {
  --bg: #070b16;
  --bg-soft: #0b1222;
  --card: rgba(12, 19, 38, 0.82);
  --card-strong: rgba(10, 16, 31, 0.96);
  --border: rgba(120, 148, 191, 0.18);
  --text: #f3f7ff;
  --muted: #9fb0cd;
  --cyan: #22d3ee;
  --cyan-2: #0ea5e9;
  --gold: #f6c453;
  --green: #34d399;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --radius: 24px;
  --max: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 20%, rgba(34, 211, 238, 0.18), transparent 30%),
    radial-gradient(circle at 90% 10%, rgba(246, 196, 83, 0.14), transparent 28%),
    radial-gradient(circle at 80% 80%, rgba(14, 165, 233, 0.12), transparent 25%),
    linear-gradient(180deg, #060913 0%, #08111f 45%, #060913 100%);
  line-height: 1.6;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.container {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
}

.section {
  padding: 88px 0;
  position: relative;
}

.section-no-top-padding {
  padding-top: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.18);
  color: #baf4ff;
  font-size: 14px;
  font-weight: 600;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--gold));
  box-shadow: 0 0 18px rgba(34, 211, 238, 0.55);
}

.section-head {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-head h2 {
  margin: 18px 0 14px;
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.section-head p,
.section-note,
.highlight-desc,
.hero-support-text,
.hint,
.block-copy {
  color: var(--muted);
}

.section-head p,
.section-note {
  margin: 0;
  font-size: 18px;
}

.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(16px);
  background: rgba(7, 11, 22, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-logos {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  object-fit: cover;
  box-shadow: 0 10px 30px rgba(34, 211, 238, 0.16);
  background: rgba(255,255,255,.03);
}

.brand img.brand-partner {
  width: 92px;
  height: 44px;
  padding: 6px 10px;
  object-fit: contain;
  border-radius: 14px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  box-shadow: none;
}

.brand-title {
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -0.02em;
}

.brand-sub {
  color: var(--muted);
  font-size: 12px;
}

.nav-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease, background 0.25s ease;
  cursor: pointer;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  color: #041019;
  background: linear-gradient(135deg, var(--gold), #ffe08a 45%, var(--cyan));
  box-shadow: 0 16px 34px rgba(246, 196, 83, 0.25);
}

.btn-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.1);
}

.hero {
  padding: 72px 0 48px;
  overflow: hidden;
}

.hero-grid,
.story-block,
.pricing-box,
.highlight-cta-card {
  display: grid;
  gap: 24px;
  align-items: center;
}

.hero-grid { grid-template-columns: 1.1fr 0.9fr; gap: 34px; }
.story-block { grid-template-columns: 1.05fr 0.95fr; gap: 28px; align-items: stretch; }
.pricing-box { grid-template-columns: 1.05fr 0.95fr; }
.highlight-cta-card { grid-template-columns: 1.2fr .8fr; border-color: rgba(34,211,238,.2); }

.hero-copy h1 {
  margin: 18px 0 14px;
  font-size: clamp(42px, 7vw, 74px);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.hero-copy .lead {
  font-size: clamp(18px, 2.6vw, 24px);
  color: #d7e6ff;
  max-width: 680px;
  margin-bottom: 18px;
}

.hero-copy .desc {
  color: var(--muted);
  max-width: 680px;
  font-size: 18px;
  margin-bottom: 28px;
}

.hero-actions,
.hero-pills,
.story-steps,
.inline-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions { gap: 14px; margin-bottom: 28px; }
.inline-cta-row { margin-top: 24px; gap: 14px; }
.align-center { align-self: center; }

.pill,
.story-step {
  padding: 12px 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #d7e6ff;
}

.hero-support-text {
  margin-top: 18px;
  font-size: 14px;
  color: #c8d8f5;
}

.hero-card,
.story-main,
.card,
.quote-card,
.pricing-card,
.wechat-card,
.cta-final,
.table-wrap {
  background: linear-gradient(180deg, rgba(11, 18, 34, 0.88), rgba(10, 16, 31, 0.98));
  border: 1px solid var(--border);
  border-radius: 30px;
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.hero-card::before,
.pricing-card::before {
  content: "";
  position: absolute;
  pointer-events: none;
}

.hero-card::before {
  inset: -20% auto auto -20%;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.25), transparent 70%);
}

.signal-preview {
  display: grid;
  gap: 16px;
  position: relative;
  z-index: 1;
}

.preview-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.preview-head strong { font-size: 18px; }
.preview-head span,
.mini-stat .label,
.case-body p,
.quote-card p,
.pricing-card > p,
.wechat-card p,
.faq-content,
footer {
  color: var(--muted);
}

.mini-stat-grid,
.shot-grid,
.grid-4,
.grid-3,
.case-grid,
.steps-grid {
  display: grid;
  gap: 20px;
}

.mini-stat-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
.shot-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
.shot-grid.single-shot { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.steps-grid { grid-template-columns: repeat(3, 1fr); }

.mini-stat {
  padding: 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.mini-stat .num {
  font-size: 24px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 6px;
}

.preview-shot,
.shot,
.case-card {
  overflow: hidden;
  background: var(--card-strong);
  border: 1px solid var(--border);
}

.case-image-btn {
  display: block;
  width: 100%;
  padding: 0;
  margin: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
}

.case-image-btn img {
  width: 100%;
  transition: transform 0.25s ease, filter 0.25s ease;
}

.case-image-btn:hover img {
  transform: scale(1.02);
  filter: brightness(1.04);
}

.preview-shot,
.shot { border-radius: 22px; }

.shot-grid.single-shot {
  max-width: 360px;
  margin: 0 auto;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 24px;
  background: rgba(3, 8, 18, 0.86);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.lightbox-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  max-width: min(96vw, 1200px);
}

.lightbox-image {
  max-width: min(96vw, 1200px);
  max-height: 82vh;
  width: auto;
  height: auto;
  border-radius: 18px;
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.5);
  cursor: zoom-out;
}

.lightbox-caption {
  max-width: 900px;
  text-align: center;
  color: #eaf2ff;
  font-size: 16px;
  line-height: 1.5;
}

.lightbox-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}

.lightbox-nav {
  flex: 0 0 auto;
  width: 54px;
  height: 54px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 34px;
  line-height: 1;
  cursor: pointer;
}

.lightbox-close:hover,
.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.2);
}

body.lightbox-open {
  overflow: hidden;
}

.card,
.story-main,
.pricing-card,
.wechat-card,
.cta-final {
  padding: 24px;
}

.card {
  border-radius: var(--radius);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.card:hover,
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.36);
}

.card:hover { border-color: rgba(34, 211, 238, 0.32); }
.case-card:hover { border-color: rgba(246, 196, 83, 0.28); }

.card h3,
.case-body h3,
.quote-card strong { margin: 0 0 10px; }
.card h3 { font-size: 22px; line-height: 1.2; }
.card p,
.case-body p,
.quote-card p { margin: 0; font-size: 15px; }

.feature-icon,
.step-icon {
  width: 52px;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  margin-bottom: 18px;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.18), rgba(246, 196, 83, 0.14));
  border: 1px solid rgba(34, 211, 238, 0.15);
  font-size: 24px;
}

.story-main { padding: 34px; }
.block-title,
.highlight-title {
  margin: 18px 0 16px;
  font-size: clamp(30px,4vw,48px);
  line-height: 1.1;
}

.story-main p { font-size: 17px; margin: 0 0 16px; color: var(--muted); }
.story-side { display: grid; gap: 16px; }
.quote-card { padding: 24px; }
.quote-card strong { display: block; font-size: 18px; }

.table-wrap { overflow: hidden; }
table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 16px 18px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 15px;
}

th {
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #8aa0c6;
  background: rgba(255, 255, 255, 0.03);
}

td { color: #dce9ff; }
.result-positive { color: var(--green); font-weight: 800; }

.case-card {
  border-radius: 24px;
  box-shadow: 0 14px 36px rgba(0,0,0,.28);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.case-card img {
  width: 100%;
  height: auto;
  aspect-ratio: auto;
  object-fit: contain;
  background: #050811;
}

.case-image-btn {
  background: #050811;
}

.case-body {
  padding: 18px 18px 20px;
}

.case-body h3 {
  font-size: 17px;
  line-height: 1.45;
}

.case-body { padding: 18px; }
.case-type {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
  font-size: 12px;
  font-weight: 700;
  color: #091018;
  background: linear-gradient(135deg, var(--gold), #ffd56a);
}
.case-body h3 { font-size: 18px; line-height: 1.35; }

.step-number {
  font-size: 14px;
  font-weight: 800;
  color: var(--gold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.highlight-desc { margin: 0; font-size: 17px; }
.highlight-action-wrap {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.pricing-card {
  padding: 34px;
  border-color: rgba(246, 196, 83, 0.22);
  position: relative;
  overflow: hidden;
}

.pricing-card::before {
  top: -40px;
  right: -40px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(246, 196, 83, 0.18), transparent 70%);
}

.price-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  margin-bottom: 20px;
  font-size: 13px;
  font-weight: 700;
  color: #0c1220;
  background: linear-gradient(135deg, #ffe08a, var(--gold));
}

.pricing-card h3,
.wechat-card h3 {
  margin: 0 0 12px;
  line-height: 1.15;
}

.pricing-card h3 { font-size: 34px; }
.wechat-card h3 { font-size: 28px; }
.pricing-card > p,
.wechat-card p,
.faq-content { font-size: 16px; }

.check-list {
  display: grid;
  gap: 12px;
  margin-bottom: 26px;
}

.check-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: #deebff;
  font-size: 15px;
}

.check-item::before {
  content: "✓";
  flex: 0 0 auto;
  color: var(--green);
  font-weight: 900;
}

.wechat-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.wechat-box {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 16px 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255,255,255,.08);
  margin-bottom: 16px;
}

.wechat-box > div {
  min-width: 0;
}

.wechat-box .btn {
  width: auto;
  flex-shrink: 0;
  white-space: nowrap;
}

.wechat-id {
  font-size: 28px;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: #fff3c8;
  word-break: break-word;
}

.copy-feedback {
  min-height: 22px;
  font-size: 14px;
  color: #9ff7df;
  margin-top: 8px;
}

.faq-list { display: grid; gap: 16px; }
details {
  background: linear-gradient(180deg, rgba(12, 19, 37, 0.92), rgba(8, 13, 24, 0.98));
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0 22px;
  overflow: hidden;
}

summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 0;
  font-size: 18px;
  font-weight: 700;
  position: relative;
  padding-right: 32px;
}

summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 18px;
  font-size: 28px;
  line-height: 1;
  color: var(--gold);
  transition: transform .2s ease;
}

details[open] summary::after { transform: rotate(45deg); }
.faq-content { padding: 0 0 22px; }

.cta-final {
  text-align: center;
  background:
    radial-gradient(circle at top right, rgba(246, 196, 83, 0.18), transparent 30%),
    linear-gradient(135deg, rgba(10, 18, 33, 0.98), rgba(8, 13, 24, 0.98));
  border: 1px solid rgba(246, 196, 83, 0.22);
}

.cta-final h2 {
  margin: 0 0 14px;
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.08;
}

.cta-final p {
  margin: 0 auto 24px;
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
}

.sticky-cta {
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: 12px;
  z-index: 40;
  display: none;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-radius: 18px;
  background: rgba(7, 11, 22, 0.88);
  border: 1px solid rgba(246, 196, 83, 0.22);
  backdrop-filter: blur(16px);
  box-shadow: 0 20px 40px rgba(0,0,0,.35);
}

.sticky-cta strong { display: block; font-size: 14px; line-height: 1.2; }
.sticky-cta span { display: block; font-size: 12px; color: var(--muted); }
.sticky-cta .btn { width: auto; padding: 12px 16px; flex: 0 0 auto; }

footer {
  padding: 28px 0 52px;
  font-size: 13px;
}

.footer-inner {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

@media (max-width: 1080px) {
  .hero-grid,
  .story-block,
  .pricing-box,
  .highlight-cta-card,
  .grid-4,
  .grid-3,
  .steps-grid,
  .case-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-grid,
  .story-block,
  .pricing-box,
  .highlight-cta-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .brand img.brand-partner { width: 78px; }
}

@media (max-width: 720px) {
  .section { padding: 60px 0; }
  .nav { padding: 10px 0; }
  .nav-actions .btn-secondary,
  .brand-sub { display: none; }
  .hero { padding-top: 40px; }
  .mini-stat-grid,
  .shot-grid,
  .grid-4,
  .grid-3,
  .steps-grid,
  .case-grid {
    grid-template-columns: 1fr;
  }
  .hero-copy h1 {
    font-size: 38px;
    line-height: 1.02;
  }
  .section-head h2,
  .cta-final h2,
  .highlight-title {
    font-size: 34px;
    line-height: 1.12;
  }
  .section-head p,
  .cta-final p,
  .hero-copy .desc,
  .story-main p {
    font-size: 16px;
  }
  .story-main,
  .pricing-card,
  .wechat-card,
  .cta-final,
  .card {
    padding: 20px;
  }
  th, td { padding: 14px 12px; font-size: 14px; }
  .wechat-id {
    font-size: 22px;
    line-height: 1.2;
  }
  .btn {
    width: auto;
    min-height: 46px;
    padding: 11px 18px;
    font-size: 15px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn,
  .inline-cta-row .btn,
  .nav-actions .btn,
  .wechat-box .btn,
  .highlight-cta-card .btn,
  .cta-final .btn,
  .sticky-cta .btn {
    width: 100%;
  }
  .wechat-box {
    grid-template-columns: 1fr;
    align-items: flex-start;
  }
  .sticky-cta {
    display: flex;
    gap: 10px;
    padding: 10px 12px;
  }
  .sticky-cta strong { font-size: 13px; }
  .sticky-cta span { font-size: 12px; }
  body { padding-bottom: 88px; }
  .lightbox {
    padding: 16px 10px 24px;
    gap: 10px;
  }
  .lightbox-nav {
    width: 44px;
    height: 44px;
    font-size: 28px;
  }
  .lightbox-content {
    max-width: 100%;
  }
  .lightbox-image {
    max-width: calc(100vw - 108px);
    max-height: 72vh;
  }
  .lightbox-caption {
    font-size: 14px;
    padding: 0 8px;
  }
}